Now showing items 91-100 of 854
Analysis of optical propagation in thick holographic gratings
(Springer-Verlag, 1975-05)
A method of analyzing optical propagation in thick holographic gratings by decomposition of the thick material into thin gratings is discussed. The method is readily applicable to study propagation in multiple gratings of ...
An optically detected magnetic resonance study of Mn4+ in Cs2GeF6 and K2GeF6
(Elsevier, 1988-11-15)
The photoexcitation and photoluminescence spectra (2E 4A2) of MnF62- diluted in Cs2GeF6 and K2GeF6 host lattices have been recorded at liquid helium temperature. The manganese coordination geometry is Oh in Cs2GeF6 and ...
Combutational studies of end-wall flame quenching at low pressure: The effects of heterogeneous radical recombination and crevices
(Elsevier, 1983-01)
A computational study of the effect of heterogeneous radical destruction and crevices on end-wall flame quenching in a lean CH4---O2---Ar mixture at low pressure has been performed. The unsteady conservation equations for ...
Paramagnetic resonance of erbium in CaWO4
(Elsevier, 1968-12-02)
A study has been made of the paramagnetic resonance of Er3+ in single crystal CaWO4. and the parameters of the spin-Hamiltonian determined.
Molecular dynamics simulations of the freezing of gold nanoparticles
(EDP Sciences, Springer-Verlag, Società Italiana di Fisica, 2001-10)
A set of molten gold clusters, each with 1157 gold atoms, was studied by molecular dynamics simulations as the clusters underwent freezing at three different temperatures. Most of the clusters attained an icosahedral ...
High resolution photoemission study of YbAl3 at low temperature
(Elsevier, 1993-05-02)
The valence v and the 4f14-->4f137/4 transition energy TK of YbAl3 at low temperature were determined by the h igh resolution valence band photoemission spectroscopy. The obtained values v = 2.65+/-0.03 and TK=30+/-15 ...
Computational approach to steady-state eutectic growth
(Elsevier, 1989-04)
We formulate a boundary integral approach to the determination of periodic steady-state eutectic growth patterns. The numerical implementation of this method allows us to compute the band of allowed velocities for a given ...
An analysis of carrier-mediated photodiffusion membranes
(Elsevier, 1983-08)
Reversible photochromic reactions can be combined with carrier-mediated transport in partially illuminated membranes to achieve very high degrees of flux enhancement. Transport across these membranes can be achieved even ...
A phase cell cluster expansion for Euclidean field theories
(Elsevier, 1982-08)
We adapt the cluster expansion first used to treat infrared problems for lattice models (a mass zero cluster expansion) to the usual field theory situation. The field is expanded in terms of special block spin functions ...
Double-slot antennas on extended hemispherical and elliptical quartz dielectric lenses
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1993-10)
In this paper, the theoretical far-field patterns and Gaussianbeam coupling efficiencies are investigated for a double-slot antenna placed on quartz hemispherical lenses with varying extension lengths. The radiation patterns ...